The Last Old Human

The universe does not exist naturally, but is an "educational program" created by a group of extra-dimensional civilizations called "ancestors". The ancestors have been annihilated long ago, leaving behind an automatically operating cosmic system that is used to select intelligent races that can understand the "ultimate laws of the universe" and inherit their legacy. The sifting went on for billions of years, and no civilization ever got through. The system gradually ages and develops loopholes, leading to the emergence of a large number of "abnormal areas" and "regular collapse areas" in the universe.